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Type: Artigo de periódico
Title: Effects Of Method And Mri Slice Thickness On Entorhinal Cortex Volumetry.
Author: Bonilha, Leonardo
Kobayashi, Eliane
Cendes, Fernando
Li, Li M
Abstract: We assessed the effect of the method of analysis and the MRI slice thickness on entorhinal cortex volumetry. A T1 gradient echo 3D volumetric acquisition was reformatted into different slice thickness and analyzed by edge-tracing. We performed two different forms of analysis of images with 3 mm slice thickness: edge-tracing and pixel by pixel. There was difference among the volumes obtained from different slice thickness (p < 0.001), and also difference between the two different methods of analysis (p < 0.05). The use of thick slices is time saving, but volumes are linearly increased; different methods of segmentation also yields different values. The form of volumetric analysis of the entorhinal cortex should be evaluated in advance to prevent false estimates in longitudinal studies.
Subject: Adult
Analysis Of Variance
Brain Mapping
Entorhinal Cortex
Image Enhancement
Image Processing, Computer-assisted
Magnetic Resonance Imaging
Middle Aged
Citation: Neuroreport. v. 14, n. 10, p. 1291-5, 2003-Jul.
Rights: fechado
Identifier DOI: 10.1097/01.wnr.0000077545.91466.73
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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